Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Amazon
AMZN
|
$107M |
| 2 |
SPDR Gold Trust
GLD
|
$65.8M |
| 3 |
NVIDIA
NVDA
|
$61.6M |
| 4 |
Apple
AAPL
|
$51.2M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$50.9M |
Top Sells
| 1 |
Qualcomm
QCOM
|
$25.2M |
| 2 |
Netflix
NFLX
|
$24.1M |
| 3 |
Walt Disney
DIS
|
$22.2M |
| 4 |
Snowflake
SNOW
|
$17.4M |
| 5 |
Advanced Micro Devices
AMD
|
$17.2M |
Sector Composition
| 1 | Technology | 20.43% |
| 2 | Consumer Discretionary | 15% |
| 3 | Healthcare | 10.19% |
| 4 | Financials | 8.16% |
| 5 | Communication Services | 6.81% |
